The Loader logs its actions in files and in system tables.
? Log file
The Loader logs its export and import actions in the log file loader_<timestamp>.log or loader.log.
? Transformation History
When working in transport mode, the loader creates along with the log file a transformation history transport.log.
? Additional Log Functions (package_spec)
You can obtain a detailed log of a single Loader command by using the syntax element package_spec.
? System tables
Depending on the data volume, the transporting of data takes some time. The Loader can restart the action if it is interrupted. To do this, the information in the system tables is evaluated.